Charles Spurgeon Commentary Isaiah 43:27-28

"Thy first father sinned, and thy teachers have transgressed against me. Therefore I will profane the princes of the sanctuary; and I will make Jacob a curse, and Israel a reviling." — Isaiah 43:27-28 (ASV)

Your first father has sinned, and your teachers have transgressed against me. Therefore I have profaned the princes of the sanctuary, and have given Jacob to the curse, and Israel to reproaches.

God justifies himself for his heavy strokes upon Israel, tells them that the reason lay in their own sin.